The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 2009
Filed:
Aug. 27, 2007
Daisuke Yamazaki, Kawasaki, JP;
Andrzej Radecki, Setagaya, JP;
Daisuke Yamazaki, Kawasaki, JP;
Andrzej Radecki, Setagaya, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
To be capable of receiving many data without increasing a transfer speed. A wave detector detects a radio signal RF received by an antenna. The radio signal RF received by the antenna has been subjected to ASK modulation, for example, and by getting it through a lowpass filter or the like, an envelope (multilevel signal) that is a basis of received data D, Dis obtained. An amplitude detector detects the maximum value and the minimum value of the amplitude of the multilevel signal. A threshold calculator calculates a plurality of thresholds to be used for determining whether the multilevel signal is H state or L state, from the maximum value and the minimum value detected by the amplitude detector. A multilevel restoration unit compares the multilevel signal with each of the thresholds to detect the H state and the L state, and reconstructs a plurality of received data Dto Dn.